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Re: password protection of a file



Toshiro wrote:
> I guess you use very bad passwords, with any decent password it would take you 
> much more than a few seconds to find it.
No, even with a password of
``oI9fBqNi6MVSXBu1TzCrkIKmh67R4+DcNB0OPERo9yaaHwUt/f7ytv4nLqZs'' (head -n 2
/dev/urandom | uuencode -m - | head -n 2 | tail -n 1) it cracked the zip file in
less than 1 sec.

The problem isn't getting the password (like it is with salted md5/sha1
breaking), but encryption collisions. The encryption algorithm used by zip is
extremely weak, and there were *thousands* of 5 character passwords that have
the exact same effect as the one above.


-- 
-----BEGIN GEEK CODE BLOCK-----
Version: 3.1
GAT/CM$/CS>$/CC/IT$/M/S/O/U dpu s+:++ !a C++$>C+++$
UB+++>++++$L++++$*-- P+>++$ L+++(++++)$ E-(---) W+++>$ N(+) o? K-
w--(---) O? M V? PS++@ PE-@ Y+@ PGP++(+++)>$ t? 5? X? R tv--(-)
b++(+++)@ DI? D? G e->++++ h* r? z*
------END GEEK CODE BLOCK------

David Mandelberg
mandelbergd@eth0.is-a-geek.org

Attachment: signature.asc
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